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Thread: How to do the main ?

  1. #1
    Junior Member
    Join Date
    Apr 2012
    Thanked 0 Times in 0 Posts

    Default How to do the main ?

    Write a program that has an array of 5 Strings, and determines which ones are
    palindromes (letter-case does not matter)
    The main should only initialize the array, and
    print the palindrome words found. You can break your problem into smaller pieces
    dealt with in separate methods. For example you might need a method that determines
    whether a String is a palindrome or not

    public class Palindrome
      public static void main(String [] args) {
         String[] s = new String[5];
        public static String Reverse(String x) {
            String hold = "";
            char [] c = x.toCharArray();
            for (int i = c.length-1; i>0; i--)
            hold = hold +c[i];
            return hold;
        public static boolean pallindromCheck(String n) {
            String x=Reverse(n);
            if (x==n)
                return true;
                return false;


  2. #2
    Join Date
    Jan 2012
    Thanked 59 Times in 57 Posts

    Default Re: How to do the main ?

    Hello sarrrry92!
    You are initializing your array but the values it keeps are the default ones (null). You should better fill it with some Strings, some of them palindromes
    For example:
    String[] s = {"anna", " dien", "omnnmo"};
    Then you can loop through your array and call the pallindromCheck(String n) method.
    And something else i noticed:
    if (x==n)
    You should use the String's equals() method instead of the == operator when comparing Strings.
    Hope it helps.

  3. #3
    Super Moderator Norm's Avatar
    Join Date
    May 2010
    Eastern Florida
    Thanked 2,461 Times in 2,412 Posts

    Default Re: How to do the main ?

    Cross posted at How to do the main | DaniWeb
    If you don't understand my answer, don't ignore it, ask a question.

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